Biosecurity
生物安全
🗣️ 情景例句
mashed potatoes, and a tossed green salad to begin with.
马铃薯泥， 还有蔬菜沙拉当头道菜。
Morning, How are you?
早，你好吗？
It is good to learn to work with others in a team.
学会在一个集体里与其他人一道工作是有益的。